Cableizer
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Distance between the axis of a conductor and the cable center

In two-core cables, $c_c=s_c/2$ and in three-core cables, $c_c=s_c/\sqrt 3$.

Symbol
$c_c$
Unit
mm
Formulae
$0.55r_1+0.29{\cdot}2t_i$Multi-core cables, sector-shaped conductors
$\frac{s_c}{2sin\left(\frac{\pi}{n_c}\right)}$Multi-core cables, round conductors
$\frac{s_c}{2}$Two-core cables, round conductors
$\frac{s_c}{\sqrt{3}}$Three-core cables, round conductors
Related
$n_c$
Number of conductors in object
$\pi$
Archimedes' constant $\pi$
$r_1$
Radius of the circle circumscribing the shaped conductors [mm]
$s_c$
Separation of conductors in a system [mm]
$t_i$
Thickness of insulation [mm]
Used in
$\alpha_p$
Factor $\alpha_p$
$C_b$
Capacitance of insulation [F/m]
$C_E$
Capacitance to earth [F/m]
$\lambda_{12}$
Loss factor of shield by eddy currents
$\lambda_2$
Loss factor of armour
$\lambda_{21}$
Loss factor of armour by circulating currents
$q_{Mie}$
Factor $q$ (Mie1905)